With Proper Handling

Colorized, painted, hologram, and jeweled Coins can, even with proper handling, before or after grading and encapsulation, lose some or all of these additive features.

即使经适当处理，在评级或封装前后，该等上色，着色，添加全息防伪，以及镶嵌宝石的钱币上的添加物的特性也有可能全部或部分丧失。

Further work can be done on the framework to enhance the implementation with proper exception handling and caching services.

可以开展进一步工作，使用适当的异常处理和缓存服务加强实现。

The portlet implementation needs to make sure that there is proper backend access and cache update handling if the cache does not return the data when queried with a certain key.

Portlet实现需要确保如果使用特定键查询时，缓存没有返回数据，应有适当的后端访问和缓存进行更新处理。